The best open source alternative to Amazon Lex is Khoj. If that doesn't suit you, our users have ranked more than 25 alternatives to Amazon Lex and seven of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Amazon Lex are Syllabi, Botpress, Hubot and rasa NLU.
Khoj is an open-source AI second brain that learns from your notes (Obsidian, EMACS), documents, and has access to the internet. It can replace your search engine, help you with reading papers, and get you transparent, fast answers.
An open-source AI-powered chatbot platform with advanced knowledge base integration, multi-modal support, and seamless integrations.
Botpress is an open-source conversational AI platform with a comprehensive set of functionalities for FAQ & task automation. It's lightweight and have zero external dependencies allowing you to deploy it anywhere.
Hubot is a framework to build chat bots, modeled after GitHub's Campfire bot of the same name, hubot.
rasa NLU is a tool for intent classification and entity extraction. You can think of rasa NLU as a set of high level APIs for building your own language parser using existing NLP and ML libraries.
Onyx (formerly Danswer) is the AI platform connected to your company's docs, apps, and people. Onyx provides a feature rich Chat interface and plugs into any LLM of your choice. Keep knowledge and access controls sync-ed across over 40 connectors like Google Drive, Slack...
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